Cancún is a coastal city in Mexico's easternmost state, Quintana Roo. It is the municipal seat of Benito Juárez municipality and a world renowned tourist resort. Cancún - Geography. The average temperature in Cancún is 27° C (80° F) with more than 240 days of sunshine, and rain is rare, with late August through early October being the rainy season. The beaches are almost 100 percent limestone; the porous quality of the limestone makes for cool sand even under the intense tropical sun. Cancún is divid ...

Including:

• Cancún - Geography
• Cancún - History
• Cancún - Environmental concerns
• Cancún - Tourism in Cancún
• Cancún - Hurricane Wilma
• Cancún - Sister cities

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Coke is a solid carbonaceous residue derived from low-ash, low-sulfur bituminous coal. The volatile constituents of the coal (including water, coal-gas and coal-tar) are driven off by baking in an airless oven at temperatures as high as 1,000 degrees Celsius so that the fixed carbon and residual ash are fused together. Coke fuel - Properties & usage. Coke typically has a specific gravity in the range 1.85 - 1.9. It is highly porous, and a mass of coke has 40% greater volume than the equivalent mass of c ...

Including:

• Coke fuel - Properties & usage
• Coke fuel - History
• Coke fuel - Other varieties

Read more here: » Coke fuel: Encyclopedia - Coke fuel

Caliche is a hardened deposit of calcium carbonate. This calcium carbonate cements together other materials, including gravel, sand, clay, and silt. It is found in aridisol and mollisol soil orders. Caliche occurs worldwide, generally in arid or semi-arid regions, including in central and western Australia, in the Kalahari Desert, and in the High Plains of the western USA. Caliche is also known as hardpan, calcrete, kankar (in India), or duricrust. The term caliche is Spanish and is origin ...

Including:

• Caliche - How it forms
• Caliche - Economic uses
• Caliche - Building applications
• Caliche - Sugar refining
• Caliche - Chilean caliche
• Caliche - Caliche and Gardening
• Caliche - Problems Caliche Causes
• Caliche - Fixing these problems

Read more here: » Caliche: Encyclopedia - Caliche

Petroleum (from Greek petra – rock and oleum – oil), crude oil, sometimes colloquially called black gold, is a thick, dark brown or greenish liquid. A widely believed myth is that the oil itself is flammable; however, it is actually the gas that evaporates from the oil that is flammable. Petroleum exists in the upper strata of some areas of the Earth's crust. Another name is naphtha, from Persian naft or nafátá (to flow). It consists of a complex mixture of various hydrocarbons, l ...

Including:

• Petroleum - Origin
• Petroleum - Biogenic theory
• Petroleum - Abiogenic theory
• Petroleum - Composition
• Petroleum - Extraction
• Petroleum - Alternate means of producing oil
• Petroleum - History
• Petroleum - Environmental effects
• Petroleum - Future of oil
• Petroleum - Classification
• Petroleum - Pricing
• Petroleum - Top petroleum-producing countries
• Petroleum - Books about the petroleum industry
• Petroleum - Films about petroleum
• Petroleum - Writers covering the petroleum industry

Read more here: » Petroleum: Encyclopedia - Petroleum

Capillary action or capillarity (also known as capillary motion) is the ability of a narrow tube to draw a liquid upwards against the force of gravity. It occurs when the adhesive intermolecular forces between the liquid and a solid are stronger than the cohesive intermolecular forces within the liquid. The effect causes a concave meniscus to form where the liquid is in contact with a vertical surface. The same eff ...

Including:

• Capillary action - Formula
• Capillary action - Trivia

Read more here: » Capillary action: Encyclopedia - Capillary action

The Kingdom of Bhutan (IPA: /buː'tɑːn/ Listen ▶ (help·info)) is a landlocked South Asian nation situated between India and China.The landscape ranges from the subtropical plains to the Himalayan heights, an elevation gain of more than 7000 m. Its economy is based on subsistence agriculture (emphasizing corn and rice) and animal husbandry. Small, terraced farms predominate. Forestry, hydroelectric ...

Including:

• Bhutan - The Name
• Bhutan - History
• Bhutan - Geography
• Bhutan - Economy
• Bhutan - Government and politics
• Bhutan - Districts
• Bhutan - Military and foreign affairs
• Bhutan - Demographics
• Bhutan - Culture
• Bhutan - Current Affairs
• Bhutan - Notes

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The bolt manufacturing process consists of three stages: Heading Thread rolling Blackening Bolt manufacturing process - Heading. The initial process is a cold forging process to produce a near net shape, called "heading", to produce the overall bolt shape. Bolts have a large head to shank ratio. Generally, they are longer than 1½ times the diameter, have multiple diameters, and require a geometrical shape (i.e. the rounded head). Furthermore, this production met ...

Including:

• Bolt manufacturing process - Heading
• Bolt manufacturing process - Thread rolling
• Bolt manufacturing process - Blackening
• Bolt manufacturing process - Materials
• Bolt manufacturing process - Work-holding fixtures

Read more here: » Bolt manufacturing process: Encyclopedia - Bolt manufacturing process

In physics and fluid mechanics, the boundary layer is that layer of fluid in the immediate vicinity of a bounding surface. In the atmosphere the boundary layer is the air layer near the ground affected by diurnal heat, moisture or momentum transfer to or from the surface. On an aircraft wing the boundary layer is the part of the flow close to the wing. The Boundary layer effect occurs at the field region in which all changes occur in the flow pattern. The boundary layer distorts surrounding nonviscous flow. It is a phenomenon o ...

Including:

• Boundary layer - Aerodynamics
• Boundary layer - Boundary layer equations
• Boundary layer - Turbulent boundary layers
• Boundary layer - Boundary layer turbine
• Boundary layer - Bibliography

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Aerogel is a solid-state substance similar to gel where the liquid component is replaced with gas. The result is an extremely low density solid with several remarkable properties, most notably its effectiveness as an insulator. It is nicknamed frozen smoke, solid smoke or blue smoke due to its semi-transparent nature; however it feels like foam to the touch. Aerogel was first created by Steven Kistler in 1931, as a result of a bet with Charles Learned over who could replace the liquid inside a jelly jar wit ...

Including:

• Aerogel - Properties
• Aerogel - Silica aerogel
• Aerogel - Uses
• Aerogel - Production

Read more here: » Aerogel: Encyclopedia - Aerogel

A river is a large natural waterway. The source of a river may be a lake, a spring, or a collection of small streams, known as headwaters. From their source, all rivers flow downhill, typically terminating in the ocean. The mouth, or lower end of a river is known as its base level. A river's water is normally confined to a channel, made up of a stream bed between banks. Most rainfall on land passes through a river on its way to the ocean. Smaller side streams that join a river are tributaries. The scientific term for any flowing natur ...

Including:

• River - Topography
• River - Biology
• River - Pollution
• River - Navigation
• River - Dams
• River - Flooding
• River - Logjams
• River - Management
• River - River lists
• River - The world's ten longest rivers
• River - Well-known rivers in alphabetic order
• River - Other lists
• River - Rivers in myth and fiction
• River - Real rivers
• River - Mythological rivers
• River - Fictional rivers
• River - Crossings
• River - Transport

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Petroleum - Biogenic theory. Most geologists view crude oil, like coal and natural gas, as the product of compression and heating of ancient vegetation over geological time scales. According to this theory, it is formed from the decayed remains of prehistoric marine animals and terrestrial plants. Over many centuries this organic matter, mixed with mud, is buried under thick sedimentary layers of material. The resulting high levels of heat and pressure cause the remains to metamorphose, first into a waxy material ...

See also:

Petroleum, Petroleum - Origin, Petroleum - Biogenic theory, Petroleum - Abiogenic theory, Petroleum - Composition, Petroleum - Extraction, Petroleum - Alternate means of producing oil, Petroleum - History, Petroleum - Environmental effects, Petroleum - Future of oil, Petroleum - Classification, Petroleum - Pricing, Petroleum - Top petroleum-producing countries, Petroleum - Books about the petroleum industry, Petroleum - Films about petroleum, Petroleum - Writers covering the petroleum industry

Read more here: » Petroleum: Encyclopedia II - Petroleum - Origin

Stone tools, weapons, and remnants of large stone structures provide evidence that Bhutan was inhabited as early as 2000 BC. Historians have theorised that the state of Lhomon (literally, "southern darkness"), or Monyul ("Dark Land", a reference to the Monpa – the aboriginal peoples of Bhutan) may have existed between 500 BC and 600 AD. The names Lhomon Tsendenjong (Sandalwood Country), and Lhomon Khashi, or Southern Mon (country of four approaches) have been found in ancient ...

See also:

Bhutan, Bhutan - The Name, Bhutan - History, Bhutan - Geography, Bhutan - Economy, Bhutan - Government and politics, Bhutan - Districts, Bhutan - Military and foreign affairs, Bhutan - Demographics, Bhutan - Culture, Bhutan - Current Affairs, Bhutan - Notes

Read more here: » Bhutan: Encyclopedia II - Bhutan - History

Caliche - Building applications. Caliche is used in construction worldwide. The caliche reserves in the Llano Estacado in Texas can be used in the manufacture of Portland cement; the caliche meets the chemical composition requirements and has been used a principal raw material in Portland cement production in at least one Texas plant. Where the calcium carbonate content is over 80 percent, caliche can also be fired and used as a source of lime in areas, which ...

See also:

Caliche, Caliche - How it forms, Caliche - Economic uses, Caliche - Building applications, Caliche - Sugar refining, Caliche - Chilean caliche, Caliche - Caliche and Gardening, Caliche - Problems Caliche Causes, Caliche - Fixing these problems

Read more here: » Caliche: Encyclopedia II - Caliche - Economic uses

SpongeBob has a career as a fry cook at the Krusty Krab restaurant, home of the Krabby Patty. He takes his job very seriously and is very good at it. He was employee of the month over twenty six times, which would mean he has worked there at least two years. Then, in The Spongebob Squarepants Movie, he has had 374 consecutive employee-of-the-month awards, which would mean he has worked there for at least 31 years and 2 months. Because of labor laws, this puts his minimum age around 52 years, 2 months. He works alongside Squidward (much to Sq ...

See also:

SpongeBob SquarePants character, SpongeBob SquarePants character - Appearance, SpongeBob SquarePants character - General, SpongeBob SquarePants character - Job and Leisure, SpongeBob SquarePants character - Family, SpongeBob SquarePants character - Trivia

Read more here: » SpongeBob SquarePants character: Encyclopedia II - SpongeBob SquarePants character - Job and Leisure

Petroleum - Biogenic theory. Most geologists view crude oil, like coal and natural gas, as the product of compression and heating of ancient vegetation over geological time scales. According to this theory, it is formed from the decayed remains of prehistoric marine animals and terrestrial plants. Over many centuries this organic matter, mixed with mud, is buried under thick sedimentary layers of material. The resulting high levels of heat and pressure cause the remains to metamorphose, first into a waxy material ...

See also:

Petroleum, Petroleum - Origin, Petroleum - Biogenic theory, Petroleum - Abiogenic theory, Petroleum - Extraction, Petroleum - Alternate means of producing oil, Petroleum - History, Petroleum - Environmental effects, Petroleum - Future of oil, Petroleum - Classification, Petroleum - Pricing, Petroleum - Top petroleum-producing countries, Petroleum - Petroleum in Military Strategy, Petroleum - Books about the petroleum industry, Petroleum - Films about petroleum, Petroleum - Writers covering the petroleum industry

Read more here: » Petroleum: Encyclopedia II - Petroleum - Origin

With notes on the dimension in SI units, the height h of a liquid column (m) is given by: ...where: T = surface tension (J/m²) θ = contact angle ρ = density of liquid (kg/m3) g = acceleration due to gravity (m/s²) r = radius of tube (m) For a water-filled glass tube in air at sea level, T = 0.0728 J/m² at 20 °C θ = 20° (0.35 rad) ρ = 1000 kg/m3 g = 9.8 m/s² ...and so the height of the wat ...

See also:

Capillary action, Capillary action - Formula, Capillary action - Trivia

Read more here: » Capillary action: Encyclopedia II - Capillary action - Formula

Sedimentary rock - Clastic sedimentary rocks. Clastic sedimentary rocks are composed of discrete fragments or clasts of materials derived from other rocks. They are composed largely of quartz with other common minerals including feldspars, amphiboles, clay minerals, and sometimes more exotic igneous and metamorphic minerals. Clastic sedimentary rocks may be regarded as falling along a scale of grain size, with shale being the finest with particles less than 0.004 mm, siltstone being intermediate with parti ...

See also:

Sedimentary rock, Sedimentary rock - Formation, Sedimentary rock - Classification, Sedimentary rock - Clastic sedimentary rocks, Sedimentary rock - Biogenic sedimentary rocks, Sedimentary rock - Precipitate sedimentary rocks, Sedimentary rock - Other information

Read more here: » Sedimentary rock: Encyclopedia II - Sedimentary rock - Classification

In the early 1950s Cancun was an almost unpopulated and undeveloped island just off the Caribbean Sea coast of the Yucatán peninsula, home to three caretakers of a coconut plantation and small Pre-Columbian ruins of the Maya civilization. The government of Mexico decided to develop a tourist resort on Cancun, which was originally financed by a USD $27 million loan from the Inter-American Development Bank. A causeway was built to link Cancun to the mainland, and an international airport was built, along with what was at first a model city fo ...

See also:

Cancún, Cancún - Geography, Cancún - History, Cancún - Environmental concerns, Cancún - Tourism in Cancún, Cancún - Hurricane Wilma, Cancún - Sister cities

Read more here: » Cancún: Encyclopedia II - Cancún - History

Coke typically has a specific gravity in the range 1.85 - 1.9. It is highly porous, and a mass of coke has 40% greater volume than the equivalent mass of coal. Since the smoke-producing constituents are driven off during the coking of the coal, coke forms a desirable fuel for stoves and furnaces in which conditions are not suitable for the complete burning of bituminous coal itself. Coke may be burned with little or no smoke under combustion conditions which would result in a lar ...

See also:

Coke fuel, Coke fuel - Properties & usage, Coke fuel - History, Coke fuel - Other varieties

Read more here: » Coke fuel: Encyclopedia II - Coke fuel - Properties & usage

A person who makes pottery is traditionally known as a potter. The potter's most basic tool is his or her hands, however many of their tools have been created over the long history of pottery, including the potter's wheel, various paddles, shaping tools (or ribs), slab rollers, and cutting tools. Pottery - Forming techniques. There are three basic categories of forming techniques used in pottery—handwork, wheel work, and slipcasting. It's very common for wheel-worked pieces to be finished by handwork techniques. Slipcast pieces tend not to be, as that negates o ...

See also:

Pottery, Pottery - Types of pottery, Pottery - Techniques, Pottery - Forming techniques, Pottery - Decorative and finishing techniques, Pottery - Glazing and firing techniques, Pottery - Production stages, Pottery - History, Pottery - Palaeolithic pottery, Pottery - Neolithic pottery, Pottery - Reference

Read more here: » Pottery: Encyclopedia II - Pottery - Techniques